Nidec Unidrive M600 Series - Page 249

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Unidrive M Regen Design Guide 249
Issue Number: 4
Indicates how many controlled rectifiers connected to the drive have been detected. See Number Of Rectifiers Expected (11.096).
Number Of Rectifiers Expected (11.096) defines how many controlled rectifiers are expected on each power module. Within a complete drive with a
diode input stage there are no controlled rectifiers. Within a complete drive with a controlled rectifier input stage there is one controlled rectifier. For a
drive where external rectifiers are used the system can register up to nine controlled rectifiers. If Number Of Rectifiers Expected (11.096) = 0 then the
rectifier monitoring system is disabled and the drive does not check how many controlled rectifiers are present. This is the default setting and should
be used for complete drives with internal rectifiers because the monitoring function is not necessary. If Number Of Rectifiers Expected (11.096) is set
to a non-zero value a check is made to ensure that at least this number of external rectifiers are connected to each power module. If there are less
external rectifiers than defined by Number Of Rectifiers Expected (11.096) then a Configuration is initiated with the sub-trip indicating how many
rectifiers should be present. See Trip 0 (10.020).
11.095 Number Of Rectifiers Detected
RO Num ND NC PT

0 to 9

11.096 Number Of Rectifiers Expected
RW Num US

0 to 9

0